Alejo is a distinctive boys' name in United States, ranking #5667 in 2013 with 15 recorded births. The name reached its all-time peak in 2025 with 22 births ranking #4544. Since 1996, the popularity has decreased by 11.8%. In 2013, approximately 1 in every 126,084 boys born was named Alejo. RISING Recent data shows the name is currently rising.